JPS6320979B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has a hook protruding from a predetermined position on the back surface, and outer molded plates are faced to each other with a predetermined distance between them on the back surface, and a coupling tool is inserted into the hook to attach one layer or multiple layers. This invention relates to an improvement in a method for constructing walls such as buildings, retaining walls, or fences by repeatedly placing ready-mixed concrete in rows and pouring concrete at opposing intervals.

The above-mentioned wall construction method was developed by the applicant in Japanese Patent Publication No. 62-
4496, JP-A-60-9193, JP-A-57-184149, JP-A-62-36098, etc., especially JP-A-57-
In 184149, a reference frame is installed on the top of the constructed foundation for arranging the lowermost inner and outer molded plates, and walls are constructed accurately according to the design according to this reference frame, especially for external walls and partition walls of buildings. A method suitable for construction is disclosed.

In the present invention, after constructing the foundation, the inner and outer molded plates of the lowest tier are accurately erected and arranged on the upper surface according to the site situation without relying on a reference frame, and from then on, the molded plates arranged erected in the lowermost tier are used as a reference. The invention was improved so that the inner and outer molded plates of the upper stage were arranged vertically to construct the desired wall body, and will be described below with reference to the illustrated embodiment.

A and A' are inner molded plates and outer molded plates that are arranged side by side with a predetermined distance between their back surfaces, and hooks 1 protrude by a certain amount from four predetermined positions on the left, right, top, and bottom of the back surfaces of each plate A, A'. Both boards A and A' are large enough to be easily transported, for example, about 2 cm thick, about 45 cm wide from side to side, and about 15 cm high from top to bottom for walls of buildings, and about 30 cm for retaining walls and fences. The hooks are made of concrete, and the hooks protrude from the top and bottom about 1/4 of the left and right width inward from both left and right ends. It is now aligned vertically between the two.

This hook is formed by bending the horizontal reinforcing bars in the vertical and horizontal reinforcing bars buried in the concrete when forming the plates A and A' with concrete into a V-shape, U-shape, Ω-shape, etc., and protruding from the back side. It may be formed by welding the base of a metal piece with a hole or a notch open on one side to a reinforcing bar in the part that projects outward from the back surface, and when the plate is formed, it becomes an integral part of the plate.

To build a wall, use a foundation B with a horizontal top surface on the site.
is made by pouring concrete, and on the top surface there is a jig 2, that is, a connecting part 3 extending between the inner and outer molded plates.
A jig 2 having legs 4 and 4' provided at a predetermined angle at each end of the connecting part 3 is used, and one leg 4 of the jig is connected to the hook 1 of the inner forming plate A, and the other leg is attached to the hook 1 of the inner forming plate A. 4′
Insert into hook 1 of outer molded plate A' and line up the lowest tier of the inner and outer molded plates along the foundation.

For example, jig 2 has a width of 19 mm, a thickness of 3 mm, and a standard length.
The connecting part 3 and each leg 4, 4' are made by cutting a 5.5 m iron flat bar, and the legs 4, 4' are welded to each end of the connecting part to form an inverted U-shape or an H-shape. In this case, as shown in FIG. 2, the connection part 3 uses a flat bar, and each leg 4, 4' has a flat bar whose orientation is perpendicular to the connection part.

Figures 3, 4 and 5 show an embodiment in which a substantially vertical wall is constructed on the horizontal upper surface of a foundation, with each leg oriented at right angles to the connection. Then, place the connecting part 3 of the jig on the top surface of the foundation, and attach the legs of the jig to the upper and lower hooks on the left and right sides of the inner and outer forming plates at the bottom, respectively, from bottom to top as shown in Figures 3 and 4. Either insert it in a series and pass it through, or with the connecting part facing up, insert it into the upper and lower hooks on the left and right as shown in Figure 5 from top to bottom, and then use the connecting part of the jig to form the inner and outer parts. Stand the boards apart on the foundation, with the front and back adjacent and the bottom row standing upright.

The hook 1 has enough room for two or three flat bars to pass through, so the lower end of the connecting piece 5, which is about 1 m long and is cut from the same flat bar by sliding it on each leg of the jig, is inserted into the bottom inner part of the hook 1. , are inserted into the upper and lower hooks on the left and right sides of the outer molding plate from above, projecting upward from the molding plate, and used for arranging several tiers of molding plates on top of it (see Figure 4). In addition, connecting clips 6 made of thick soft iron wire (about 4 mm in diameter) are used to connect the inner and outer molded plates in some places in the rows of the inner and outer molded plates arranged vertically. A connecting clip (Fig. 5) having an extending connecting portion 7 and insert portions 8, 8' formed by bending the connecting portion into a substantially U-shape at each end of the connecting portion is attached to the leg of the jig. 4, 4' In addition to the connecting piece 5, there are inner and outer molded plates A,
Insert it into the hook of A' and connect.

Once the inner and outer molded plates at the bottom are lined up on the foundation, ready-mixed concrete C is poured into the spaces between them, or the upper and lower hooks are fitted into the upwardly extending connecting pieces 5, and connecting clips 6 are inserted here and there as necessary. After connecting the molded plates with the bottom layer and arranging one or more inner and outer molded plates in a row on top of the lowest layer, ready-mixed concrete C is poured into the spaces between them.

When the pouring of ready-mixed concrete is finished, one or more layers of inner or outer molding plates are placed on top of it again using the connecting pieces 5 that protrude upwards, preferably before the previously placed ready-mixed concrete hardens. , repeat the process of pouring ready-mixed concrete again. For example, if the length of the connecting piece is about 1 m as mentioned above and the height of the molding plate is 30 cm, the length of the connecting piece that protrudes upward from the molding plate of the third stage will be shortened, and the length of the connecting piece will be shortened, and the height of the molding plate will be 30 cm. When it is no longer possible to pass the connecting pieces through the upper and lower hooks of the molding plates in the 3rd stage, insert the lower ends of the next joining piece into the upper and lower hooks of the 3rd stage molding board, and then Using the new joint pieces, line them up vertically, insert the joint pieces into the hooks on the third tier, and insert them twice (see Figure 4), then line up the required number of molded plates vertically to build a wall of the desired height. That's what I do.

Of course, it is also possible to set up a group of vertical reinforcements extending upward from the foundation through the space between the back surfaces of the inner and outer molded plates, and the horizontal reinforcements can be arranged by fastening them to vertical reinforcements or connecting clips before pouring the ready-mixed concrete. It's okay. Furthermore, when constructing a wall in a straight line along the foundation, in order to align the rows of adjacent inner molded plates and the rows of outer molded plates in a straight line, prior to pouring ready-mixed concrete, as shown in Japanese Patent Application No. 56-68220. It is preferable to place a long ruler 9 made of wood or metal along the upper part of the surface of the molded plate and tighten the inner surface of the molded plate and the outer surface of the ruler with a vise 10 or the like.

In this way, without fixing the reference frame on the foundation, the lowermost inner and outer molded plates are erected and adjacent to each other using a jig, and then the upper inner and outer molded plates are placed on top of the inner and outer molded plates using a connecting piece. A wall can be constructed by repeatedly arranging concrete in order and pouring ready-mixed concrete in the spaces between them.

The present invention is particularly effective when a wall such as a retaining wall is constructed at an angle with respect to the vertical as shown in FIG.

In this case, the legs 4, 4' of each jig 2 are tilted and fixed to each end of the connecting portion 3 by an inclination angle α with respect to the vertical of the wall to be constructed (FIG. 2). As a result, in the same way as explained in Figures 3, 4, and 5 above, the lowermost inner and outer molded plates are erected on the horizontal upper surface of the foundation B using a jig at an angle α, and the front and rear molded plates are adjacent to each other. Arrange them in rows, or each time they are arranged in a row, or
Ready-mixed concrete is poured into each three-tiered structure, allowing the construction of sloped retaining walls. In the case of retaining walls, holes are made here and there between the inner and outer molded plates facing each other in order to draw out groundwater from the soil behind the wall, and drainage pipes 12 are installed between the inner and outer molded plates.
After penetrating the concrete, pour ready-mixed concrete.

Conventionally, in order to construct a sloped earth retaining wall by piling up blocks, the foundation B was used as shown in Figure 8.
It is necessary to finish the top surface B' so that it is perpendicular to the slope of the retaining wall to be constructed, and when pouring fluid ready-mixed concrete to create a foundation, it takes a lot of work to make the top surface slope like that. In addition to this, it was also necessary to poke the concrete with a stick or the like to sew between the backings 11' of the stacked blocks 11 and spread the concrete to every corner. Furthermore, since the top end (top end) of the constructed retaining wall is sloped according to the slope of the wall,
It is also necessary to finish this so that it is level.

However, according to the present invention, the foundation B is the simplest because it can be made so that the upper surface is horizontal, and the inner and outer molded plates at the lowest stage are formed by forming opposite hypotenuses of a parallelogram on the upper surface of the horizontal foundation. It is set up with a jig like an eggplant, and the inner and outer molded boards of each tier from the second tier onwards stand diagonally with respect to the bottom tier, so the top is automatically leveled and the inner and outer molded boards are The gap between the back surfaces can be easily filled with poured ready-mixed concrete, and all the problems of conventional retaining wall construction using masonry blocks can be solved.

Furthermore, in addition to this kind of retaining wall leaning backwards,
It is necessary to construct the structure according to the situation at the site, for example by curving it along the road, rather than in a straight line in the front and rear directions.

In this case, as shown in Fig. 9, in the straight section, the inner and outer molded plates are of the same width, and in the bent section, the width L of the inner molded plate A is adjusted according to the bending.
By varying the width L' of the outer molded plates A' and arranging them vertically in a piling pattern, it is possible to construct a retaining wall that follows any bend.

In each of the illustrated embodiments, a long connecting piece 5 made of a flat bar is used to align the upper molding plate on the lower molding plate, but instead of this connecting piece, the The H-shaped clip used in 117826 and 55-183734 can also be used. Also, as disclosed in Patent Applications 1 and 2 dated January 18, 1981, these connecting pieces and clips were inserted by separating the hook insertion part on the back of the molded board from the back of the board. You can wrap the ready-mixed concrete around the back of the molded plates to completely fill the joining pieces and clips with the ready-mixed concrete, or close the horizontal and vertical joints between the molded plates from the back side of the molded plates to prevent the poured concrete from flowing out from the joints. It is possible to simultaneously prevent leakage and at the same time to protect the coupling pieces and clips from corrosion.

[Brief explanation of the drawing]

Figure 1 is a perspective view of two examples of externally formed plates that can be used in the present invention, Figure 2 is a perspective view of two examples of jigs, and Figure 3 is an example of an embodiment under construction. 4 is a vertical sectional front view of the same as above; FIG. 5 is a vertical sectional side view of another embodiment under construction;
The figure is a front view of a connecting clip that can be used in the present invention.
FIG. 7 is a longitudinal side view of still another embodiment of the present invention, FIG. 8 is a longitudinal side view of a conventional retaining wall, and FIG. 9 is a longitudinal side view of a conventional retaining wall.
The figure is a plan view of still another embodiment of the present invention, in which:
A and A' are the inner and outer forming plates, 1 is the hook, 2 is the jig, 3 is the connection part, 4 and 4' are the legs, and B
C indicates the foundation and C indicates the ready-mixed concrete.

Claims (1)

[Scope of Claims] 1. The inner and outer molded plates with hooks protruding from a predetermined position on the back surface are arranged to face each other with a predetermined interval maintained between them,
In a method of constructing a concrete wall, the method of constructing a concrete wall involves inserting a connecting means into the hook, arranging the inner and outer molded plates in one or more tiers, and repeatedly pouring ready-mixed concrete between the inner and outer molded plates. A jig is provided with an extending connecting part and legs attached to each end of the connecting part at an angle matching the upright angle of the wall to be constructed and inserted into the hooks of the inner molded plate and the outer molded plate. A method of constructing a concrete wall, which is characterized by arranging the inner and outer molded plates of the lowest tier on the top surface of the foundation.